JP2015171901A - blow-molded container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blow-molded container that can be easily produced with a simple structure, and allows decorative effect or functionality to be added thereto.SOLUTION: A blow-molded container 1 comprises a container body 2 formed by blow molding. An insert member 3 for adding decorative effect or functionality is buried in the container body 2 at blow molding for integration.

Description

  The present invention relates to a blow molded container formed by blow molding, and particularly to a blow molded container to which decorativeness or functionality is added.

  For example, in a bottle-type container containing shampoo or the like, it is desired to add decoration such as a three-dimensional concavo-convex pattern, texture, and texture, and functions such as a massage function, a non-slip function, and a heat insulation function. .

Conventionally, a container that has an uneven pattern on the surface of the container has been proposed by laminating an in-mold label on which the uneven pattern appears by partially forming a non-adhesive part on the substrate. (See Patent Document 1).
Further, a container having a massage function added by providing a required pocket on the wall surface of the container body and incorporating a spherical massage device in the pocket has been proposed (see Patent Document 2).

JP 2012-18346 A JP-T-2004-509812

However, in the container according to Patent Document 1, in order to make the concavo-convex pattern appear in the in-mold label, the bonded portion and the non-adhesive portion must be formed on the base material in accordance with the concavo-convex pattern formation pattern. There is a problem that the structure of the material becomes complicated.
In addition, in the container of this Patent Document 1, in the production thereof, a step of applying an adhesion preventing agent so that the adhesive does not substantially adhere to a predetermined portion of the substrate in accordance with the formation pattern of the uneven pattern, and the uneven pattern There is a problem that an accurate bonding process is required so that the bonded portion and the non-bonded portion are formed according to the formation pattern, and a high-level and complicated manufacturing technique is required, which makes it difficult to manufacture.

  On the other hand, in the container according to Patent Document 2, an assembly process for incorporating a massage device into the pocket of the container body is required in addition to the resin molding process for forming the container body, which requires time and effort for manufacturing. There is.

  An object of the present invention is to provide a blow-molded container that can be easily manufactured with a simple structure and can add decorativeness or functionality in view of the above-described problems of the prior art.

  In order to achieve the above object, a blow-molded container of the present invention is a blow-molded container having a container body formed by blow molding, and an insert member for adding decorativeness or functionality is used during blow molding. It is characterized by being embedded and integrated in the container body.

  In this case, a recess into which a part of the container body enters during blow molding can be formed on the contact surface side of the insert member to the container body.

  Moreover, the thin part by which the thickness of a periphery becomes thin gradually can be formed by making the side embedded in the container main body of the periphery of an insert member into a slope or a curved surface.

  According to the blow-molded container of the present invention, the insert member for adding decoration or functionality is embedded in the container body at the time of blow-molding the container body, so that it can be decorated or integrated. A blow molded container with added functionality can be easily manufactured with a simple structure.

  Further, by forming a recess into which a part of the container body enters during blow molding on the contact surface side of the insert member to the container body, the insert member and the container body in a state where a part of the container body enters the recess. Since these are integrated, the bonding strength between the insert member and the container body can be increased.

  Further, by forming a thin wall portion where the thickness of the peripheral edge gradually becomes thinner by making the side embedded in the container body at the peripheral edge of the insert member into a slope or a curved surface, at the boundary portion between the insert member and the container main body, It is possible to reliably prevent the formation of a gap in the container or the formation of an extremely thin part in which the wall thickness of the container body is extremely thin. The container can be prevented from cracking.

1 is an overall perspective view of a blow molded container according to an embodiment of the present invention. It is a cross-sectional view of the main part showing the molding method of the blow molded container, (a) is a state diagram in which the resin molded component is positioned in the mold, (b) is a state diagram in which the tubular molten resin is introduced into the mold, (C) is the state figure which expanded the tubular molten resin. It is the A section enlarged view of Drawing 2 (c). It is a figure which illustrates the condition in the case of not providing a thin part in the periphery of the base part of a resin molded component.

  Next, an embodiment of the blow molded container of the present invention will be described based on the drawings.

<Overview of blow molded container>
A blow-molded container 1 shown in FIG. 1 is a container that is suitable for use in, for example, housing shampoos, and is a bottle-shaped container body 2 having a body 2a and a mouth 2b, A resin molded part 3 as an insert member is provided.

<Description of the container body>
The container body 2 is formed of a resin material such as polypropylene by a blow molding method described later.
The body portion 2a of the container body 2 surrounds the bottom wall portion 4 on an elliptical bottom wall portion 4 that is warped upward so as to be satisfactorily placed on a washstand or the like. A peripheral wall portion 5 having a substantially elliptical cross section is integrally formed.
In this body part 2a, the part from the lower part to the middle part gradually swells as it progresses upward, and the part that passes through the middle part and reaches the upper part becomes narrower rapidly, and the middle abdomen is further swelled so that both shoulders are heeled. It is made into the shape which gave the flat shape with the shoulder-shaped barrel shape, and is made so that it may be easy to hold the container main body 2 by hand.

The mouth portion 2b of the container body 2 extends upward from the upper portion of the body portion 2a with a predetermined diameter, and a male screw 6 is formed on the outer peripheral portion thereof.
Then, by screwing a lid (not shown) to the mouth portion 2b, the lid is placed so that the shampoo of the contents does not leak out, or a cap with a hand pump is screwed to the mouth portion 2b. An appropriate amount of shampoo can be easily taken out with a hand pump, or a cap with a nozzle or the like attached to the mouth portion 2b, so that the required amount of shampoo is pushed by pushing the body portion 2a to the flat side. It can be ejected from.

<Description of resin molded parts>
The resin molded part 3 is formed of a resin material such as a thermoplastic elastomer by a known resin molding method such as injection molding, and includes a substantially rectangular sheet-like base portion 7 having chamfered corners.
In addition, the resin molded component 3 is produced in advance before the container body 2 is formed by a blow molding method to be described later, and the necessary number for manufacturing the blow molded container 1 is prepared.

As shown in FIG. 3, in the base portion 7, required linear recesses 10, that is, grooves, are provided at appropriate intervals on the contact surface side of the container body 2 with respect to the peripheral wall portion 5.
A plurality of columnar projections 11 are provided at a predetermined pitch in the vertical and horizontal directions on the surface opposite to the contact surface.
The protrusion 11 functions as a scalp massage, for example, by giving an appropriate stimulus to the scalp to promote blood circulation around the hair root.
And the thin part 12 from which the thickness of a periphery becomes thin gradually is formed by making the side embedded in the surrounding wall part 5 of the container main body 2 of the periphery of the base part 7 into a curved surface (or slope).

Next, the blow molding method of the blow molded container 1 will be described below with reference to FIGS.
In this blow molding method, a mold 15 having a positioning recess 15a on the inner surface into which a plurality of protrusions 11 in the resin molded part 3 are fitted is used.

<Explanation of blow molding method>
First, as shown in FIG. 2 (a), in order to position the resin molded component 3 with respect to the mold 15, a plurality of protrusions 11 are fitted into the positioning recess 15a, and the outer periphery of the positioning recess 15a is fitted. The base portion 7 is attached with the thin portion 12 pressed.
Next, as shown in FIG. 2B, a polypropylene tubular molten resin 16 that becomes the container body 2 after completion of the molding is introduced into the mold 15.
Then, air is blown into the introduced tubular molten resin 16, and the tubular molten resin 16 is brought into close contact with the inner surface of the mold 15 and integrated with the resin molded part 3 as shown in FIG. Inflate.
As a result, as shown in FIG. 3, a part of the tubular molten resin 16 enters the linear concave portion 10 extending in the vertical and horizontal directions in the base portion 7 of the resin molded part 3, and the base portion 7, the tubular molten resin 16, and the like. The base portion 7 is finally embedded so as to be surrounded by the tubular molten resin 16.
In addition, in order to make the molten molten resin 16 enter the recess 10 more smoothly, it is preferable to chamfer 10 a around the periphery of the recess 10.
Here, the melting points of the resin molded part 3 and the tubular molten resin 16 are relatively close. However, since the melting point of the tubular molten resin 16 is slightly higher, the resin molded part 3 is softened by the heat of the tubular molten resin 16. The tubular molten resin 16 is pressed against the resin molded part 3, and the adhesion between the resin molded part 3 and the tubular molten resin 16 can be further enhanced.

<Description of effects>
According to the blow molded container 1 of the present embodiment, the resin molded part 3 for adding decoration or functionality is embedded and integrated in the container body 2 when the container body 2 is blow molded. By directly integrating the container body 2 and the resin molded part 3 without the need for an adhesive or the like, it is possible to easily produce a blow molded container with a decorative or functional property with a simple structure. Can do.

  Moreover, since the recessed part 10 into which a part of tubular molten resin 16 enters at the time of blow molding is formed in the resin molded part 3, when the tubular molten resin 16 is cooled and hardened, a part of the peripheral wall part 5 in the container body 2 is formed. In this state, the container body 2 and the resin molded part 3 are integrated, and the bonding strength between the container body 2 and the resin molded part 3 can be increased.

  Further, the side of the resin molded part 3 that is embedded in the peripheral wall 5 of the container body 2 at the periphery of the base 7 is formed into a curved surface (or a slope), thereby forming a thin portion 12 in which the thickness of the periphery gradually decreases. Therefore, at the boundary between the container body 2 and the resin molded part 3, as shown in FIG. 4, there is a gap 17 between them, or the extremely thin part where the thickness of the container body 2 is extremely thin. 18 can be reliably prevented, and peeling of the resin molded part 3 and cracking of the container body 2 due to the gap 17 at the boundary portion and the extremely thin portion 18 can be prevented in advance.

  The blow molded container of the present invention has been described based on one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the configuration is appropriately changed without departing from the gist thereof. Is something that can be done.

For example, instead of the linear recess 10, a local recess such as a circular recess may be appropriately provided.
By adopting a suction cup-like projection instead of the columnar projection 11, an anti-slip function, a one-touch adsorption function, or the like can be added.
By replacing the columnar protrusion 11 with a designable protrusion, a three-dimensional concavo-convex pattern that highlights the design point can be applied.
By forming the resin molded part 3 from a foamable resin material, it is possible to provide a heat insulating function.
By adopting a resin material having a color, texture, or the like different from that of the container body 2 as the resin molded part 3, it is possible to change the hue and feel.

  In said embodiment, although the example which employ | adopted the bottle type thing was shown as the container main body 2, the shape of the container main body 2 is not limited to this, It can apply widely to what can be blow-molded. Yes, this is not excluded.

  Moreover, in said embodiment, although the example which employ | adopted the resin molded component 3 as an insert member was shown, it is not limited to this, For example, a metal member, a metal and resin, It is also possible to employ a composite member combining the above.

  Since the blow molded container of the present invention has a characteristic that it can be easily manufactured with a simple structure and can add decorativeness or functionality, the original function of the container, for example, It can be suitably used for applications such as adding a massage function or improving design.

1 Blow Molded Container 2 Container Body 3 Plastic Molded Parts (Insert Member)
10 Recess 12 Thin wall

Claims (3)

  A blow molded container having a container body formed by blow molding, wherein an insert member for adding decoration or functionality is embedded and integrated in the container body at the time of blow molding. Blow molded container.   2. The blow molded container according to claim 1, wherein a concave portion into which a part of the container main body enters during blow molding is formed on a contact surface side of the insert member to the container main body.   The blow-molded container according to claim 1 or 2, wherein a thin-walled portion having a gradually decreasing peripheral thickness is formed by making the side of the insert member embedded in the container body into a slope or a curved surface.

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